New Board Advice

I am looking at buying a new surfboard because I feel my 5'10, 20 1/4, 2 5/8 and 33 liters is hard to turn and lacks maneuverability. I am 5'5 , 125 pounds, female, reasonably fit and 14 years old. I can pump,bottom turn, and working on cutbacks as well as top turns. I can catch waves easily with my current board so am looking to looses some liters of volume. I cant decide between a small groveler shape like the Js flying pony 5'1 and 27 liters or a more short board shaped board like the lost V3 rocket 5'6 and 26.5 litres. What shape of board would hep me progress to more faster and snappier turns? Thanks for the help.